Good Day.
Background: I am assisting a blind ham who also suffers some hearing loss. I suggested using headphones to attenuate ambient environmental noise as he operates. The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) Question: Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? Discussion: While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already. I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) Any traction? Can anyone point me to an appropriate circuit schematic or other resource? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved, I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. Thank you - James - K8JHR - --------------------------------------- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Feed the receiver audio into the Computer and use it to mix the signals.
73, Bill K9YEQ https://wrj-tech.com/ -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Richards Sent: Wednesday, January 9, 2019 5:03 PM To: [hidden email] Subject: [Elecraft] Sorta OT - assistive technology assistance needed Good Day. Background: I am assisting a blind ham who also suffers some hearing loss. I suggested using headphones to attenuate ambient environmental noise as he operates. The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) Question: Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? Discussion: While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already. I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) Any traction? Can anyone point me to an appropriate circuit schematic or other resource? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved, I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. Thank you - James - K8JHR - --------------------------------------- ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by JHRichards
"Any traction? Can anyone point me to an appropriate circuit schematic
or other resource? " You don't mention what rig is being used. Many modern rigs provide a USB port for use with a PC. This USB port typically provides an audio as well as a CAT interface. With such a rig, mixing PC sounds with rig audio requires setting the rig CODEC audio properties to "listen to this device" and adjusting the audio balance with the volume mixer. The only hardware required is one USB A/B cable. If you do this - Please don't allow the rig's audio CODEC to be the PC's default sound playback device! Andy, k3wyc ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by JHRichards
Without knowing more details I think levels are the biggest problem. Otherwise a simple passive mixer comprised of a few resistors would suffice.
Sent from my iPad > On Jan 9, 2019, at 6:03 PM, Richards <[hidden email]> wrote: > > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss. I suggested using headphones to attenuate ambient environmental noise as he operates. The rub is, he needs to hear both his receiver AND his computer (which provides audible feedback when logging contacts and performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I can build for him to safely mix audio signals from his transceiver headphone jack with audio signals from his computer sound card headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex mixing products in the marketplace, I would prefer to build an inexpensive, small footprint solution we can easily incorporate in his station to minimize clutter and the number of cables, jacks, and controls -- he contends with plenty of that already. I suppose one solution might be a simple Y-adapter cable, but that seems too easy and I wonder whether we should isolate the signals and/or grounds in some way? (e.g., I do not wish to cause any "Pin-1" grounding issues, and etc.) > > Any traction? Can anyone point me to an appropriate circuit schematic or other resource? I don 't mind doing homework, and while I enjoy building stuff and I am familiar with the basic concepts involved, I could use a leg up on this project, especially to keep it simple and easy to build and implement. Please reply off list if this question is too far off topic, although I suspect there are many hams who might be interested in the result, besides similarly situated disabled operators. > > Thank you - James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by JHRichards
James,
There was a homebrew headphone mixer in the ARRL Handbook sometime back - simple, with op-amps to isolate the sources. However with the advent of 2 to 5 input mixers being available in the $20 to $60 range (see Amazon), it seems foolish to consider building your own - drilling the enclosure for the potentiometers and jacks, building the board, mounting things, etc. will take more time and effort than is reasonable unless you really like doing those things - and it will likely cost more than buying one already built. The nice thing about a mixer is that you have control over the level of each input as well as an overall output volume control. 73, Don W3FPR On 1/9/2019 6:03 PM, Richards wrote: > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss. I > suggested using headphones to attenuate ambient environmental noise as > he operates. The rub is, he needs to hear both his receiver AND his > computer (which provides audible feedback when logging contacts and > performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I > can build for him to safely mix audio signals from his transceiver > headphone jack with audio signals from his computer sound card headphone > jack? > > Discussion: > > While there are multiple commercially produced simple and complex mixing > products in the marketplace, I would prefer to build an inexpensive, > small footprint solution we can easily incorporate in his station to > minimize clutter and the number of cables, jacks, and controls -- he > contends with plenty of that already. I suppose one solution might be > a simple Y-adapter cable, but that seems too easy and I wonder whether > we should isolate the signals and/or grounds in some way? (e.g., I do > not wish to cause any "Pin-1" grounding issues, and etc.) > > Any traction? Can anyone point me to an appropriate circuit schematic > or other resource? I don 't mind doing homework, and while I enjoy > building stuff and I am familiar with the basic concepts involved, I > could use a leg up on this project, especially to keep it simple and > easy to build and implement. Please reply off list if this question is > too far off topic, although I suspect there are many hams who might be > interested in the result, besides similarly situated disabled operators. > > Thank you - James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
I usually like to build stuff when I can, but I have to agree with the
others who suggested a commercial mixer. They are cheap and work well. I recently bought a small behringer USB mixer for under 50 bucks for a project at work. It acts as a USB sound card, so you can mix audio to or from the PC with other sources. You can adjust levels, equalization, and position (left/right) for each source. I doubt one could homebrew an equivalent unit any cheaper. Good luck with your project! I’m sure your friend will appreciate it. On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm <[hidden email]> wrote: > James, > > There was a homebrew headphone mixer in the ARRL Handbook sometime back > - simple, with op-amps to isolate the sources. > > However with the advent of 2 to 5 input mixers being available in the > $20 to $60 range (see Amazon), it seems foolish to consider building > your own - drilling the enclosure for the potentiometers and jacks, > building the board, mounting things, etc. will take more time and effort > than is reasonable unless you really like doing those things - and it > will likely cost more than buying one already built. > > The nice thing about a mixer is that you have control over the level of > each input as well as an overall output volume control. > > 73, > Don W3FPR > > On 1/9/2019 6:03 PM, Richards wrote: > > Good Day. > > > > Background: > > > > I am assisting a blind ham who also suffers some hearing loss. I > > suggested using headphones to attenuate ambient environmental noise as > > he operates. The rub is, he needs to hear both his receiver AND his > > computer (which provides audible feedback when logging contacts and > > performing other duties.) > > > > Question: > > > > Can anyone suggest a simple passive (or active) mixer circuit schema I > > can build for him to safely mix audio signals from his transceiver > > headphone jack with audio signals from his computer sound card headphone > > jack? > > > > Discussion: > > > > While there are multiple commercially produced simple and complex mixing > > products in the marketplace, I would prefer to build an inexpensive, > > small footprint solution we can easily incorporate in his station to > > minimize clutter and the number of cables, jacks, and controls -- he > > contends with plenty of that already. I suppose one solution might be > > a simple Y-adapter cable, but that seems too easy and I wonder whether > > we should isolate the signals and/or grounds in some way? (e.g., I do > > not wish to cause any "Pin-1" grounding issues, and etc.) > > > > Any traction? Can anyone point me to an appropriate circuit schematic > > or other resource? I don 't mind doing homework, and while I enjoy > > building stuff and I am familiar with the basic concepts involved, I > > could use a leg up on this project, especially to keep it simple and > > easy to build and implement. Please reply off list if this question is > > too far off topic, although I suspect there are many hams who might be > > interested in the result, besides similarly situated disabled operators. > > > > Thank you - James - K8JHR - > > --------------------------------------- > > > > > > > > > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[hidden email] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > Message delivered to [hidden email] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by JHRichards
Not the answer you are asking for but
still maybe a valuable idea for your friend. My mother was totally deaf and my father wanted to teach her code. What he did was disassemble & repurpose a speaker and made an arrangement that attached to her forearm, this connected to the audio output. The coil moved with the CW in the audio, that pressed against her skin and she was able to tactile sense the CW really well. Maybe this will help you or someone else. 73, Gary KA1J > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss. I > suggested using headphones to attenuate ambient environmental noise as > he operates. The rub is, he needs to hear both his receiver AND his > computer (which provides audible feedback when logging contacts and > performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I > can build for him to safely mix audio signals from his transceiver > headphone jack with audio signals from his computer sound card > headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex > mixing products in the marketplace, I would prefer to build an > inexpensive, small footprint solution we can easily incorporate in his > station to minimize clutter and the number of cables, jacks, and > controls -- he contends with plenty of that already. I suppose one > solution might be a simple Y-adapter cable, but that seems too easy > and I wonder whether we should isolate the signals and/or grounds in > some way? (e.g., I do not wish to cause any "Pin-1" grounding > issues, and etc.) > > Any traction? Can anyone point me to an appropriate circuit > schematic or other resource? I don 't mind doing homework, and while > I enjoy building stuff and I am familiar with the basic concepts > involved, I could use a leg up on this project, especially to keep > it simple and easy to build and implement. Please reply off list if > this question is too far off topic, although I suspect there are many > hams who might be interested in the result, besides similarly situated > disabled operators. > > Thank you - James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by Dave Fugleberg
if the levels were close, 6 resistors costing pennies would do the job. No case or machining necessary.
Sent from my iPad > On Jan 9, 2019, at 8:42 PM, Dave Fugleberg <[hidden email]> wrote: > > I usually like to build stuff when I can, but I have to agree with the > others who suggested a commercial mixer. They are cheap and work well. > I recently bought a small behringer USB mixer for under 50 bucks for a > project at work. It acts as a USB sound card, so you can mix audio to or > from the PC with other sources. You can adjust levels, equalization, and > position (left/right) for each source. > I doubt one could homebrew an equivalent unit any cheaper. > Good luck with your project! I’m sure your friend will appreciate it. > >> On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm <[hidden email]> wrote: >> >> James, >> >> There was a homebrew headphone mixer in the ARRL Handbook sometime back >> - simple, with op-amps to isolate the sources. >> >> However with the advent of 2 to 5 input mixers being available in the >> $20 to $60 range (see Amazon), it seems foolish to consider building >> your own - drilling the enclosure for the potentiometers and jacks, >> building the board, mounting things, etc. will take more time and effort >> than is reasonable unless you really like doing those things - and it >> will likely cost more than buying one already built. >> >> The nice thing about a mixer is that you have control over the level of >> each input as well as an overall output volume control. >> >> 73, >> Don W3FPR >> >>> On 1/9/2019 6:03 PM, Richards wrote: >>> Good Day. >>> >>> Background: >>> >>> I am assisting a blind ham who also suffers some hearing loss. I >>> suggested using headphones to attenuate ambient environmental noise as >>> he operates. The rub is, he needs to hear both his receiver AND his >>> computer (which provides audible feedback when logging contacts and >>> performing other duties.) >>> >>> Question: >>> >>> Can anyone suggest a simple passive (or active) mixer circuit schema I >>> can build for him to safely mix audio signals from his transceiver >>> headphone jack with audio signals from his computer sound card headphone >>> jack? >>> >>> Discussion: >>> >>> While there are multiple commercially produced simple and complex mixing >>> products in the marketplace, I would prefer to build an inexpensive, >>> small footprint solution we can easily incorporate in his station to >>> minimize clutter and the number of cables, jacks, and controls - ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by Dave Fugleberg
Hmmm, and here I thought it meant "Old Timer", since that really relates to me.
Of course, "Off Topic "does too Chas -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Walter Underwood Sent: Wednesday, January 09, 2019 11:59 PM To: [hidden email] Subject: Re: [Elecraft] Sorta OT - assistive technology assistance needed Funny, I just realized I was misreading “OT” as Occupational Therapy. Our son just finished OT grad school and is studying for the board. Of course, assistive tech is a big part of occupational therapy. wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Jan 9, 2019, at 5:42 PM, Dave Fugleberg <[hidden email]> wrote: > > I usually like to build stuff when I can, but I have to agree with the > others who suggested a commercial mixer. They are cheap and work well. > I recently bought a small behringer USB mixer for under 50 bucks for a > project at work. It acts as a USB sound card, so you can mix audio to > or from the PC with other sources. You can adjust levels, > equalization, and position (left/right) for each source. > I doubt one could homebrew an equivalent unit any cheaper. > Good luck with your project! I’m sure your friend will appreciate it. > > On Wed, Jan 9, 2019 at 5:30 PM Don Wilhelm <[hidden email]> wrote: > >> James, >> >> There was a homebrew headphone mixer in the ARRL Handbook sometime >> back >> - simple, with op-amps to isolate the sources. >> >> However with the advent of 2 to 5 input mixers being available in the >> $20 to $60 range (see Amazon), it seems foolish to consider building >> your own - drilling the enclosure for the potentiometers and jacks, >> building the board, mounting things, etc. will take more time and >> effort than is reasonable unless you really like doing those things - >> and it will likely cost more than buying one already built. >> >> The nice thing about a mixer is that you have control over the level >> of each input as well as an overall output volume control. >> >> 73, >> Don W3FPR >> >> On 1/9/2019 6:03 PM, Richards wrote: >>> Good Day. >>> >>> Background: >>> >>> I am assisting a blind ham who also suffers some hearing loss. I >>> suggested using headphones to attenuate ambient environmental noise >>> as he operates. The rub is, he needs to hear both his receiver AND >>> his computer (which provides audible feedback when logging contacts >>> and performing other duties.) >>> >>> Question: >>> >>> Can anyone suggest a simple passive (or active) mixer circuit schema >>> I can build for him to safely mix audio signals from his transceiver >>> headphone jack with audio signals from his computer sound card >>> headphone jack? >>> >>> Discussion: >>> >>> While there are multiple commercially produced simple and complex >>> mixing products in the marketplace, I would prefer to build an >>> inexpensive, small footprint solution we can easily incorporate in >>> his station to minimize clutter and the number of cables, jacks, and controls -- he >>> contends with plenty of that already. I suppose one solution might be >>> a simple Y-adapter cable, but that seems too easy and I wonder >>> whether we should isolate the signals and/or grounds in some way? >>> (e.g., I do not wish to cause any "Pin-1" grounding issues, and >>> etc.) >>> >>> Any traction? Can anyone point me to an appropriate circuit schematic >>> or other resource? I don 't mind doing homework, and while I enjoy >>> building stuff and I am familiar with the basic concepts involved, >>> I could use a leg up on this project, especially to keep it simple >>> and easy to build and implement. Please reply off list if this >>> question is too far off topic, although I suspect there are many >>> hams who might be interested in the result, besides similarly situated disabled operators. >>> >>> Thank you - James - K8JHR - >>> --------------------------------------- >>> >>> >>> >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[hidden email] >>> >>> This list hosted by: http://www.qsl.net Please help support this >>> email list: http://www.qsl.net/donate.html Message delivered to >>> [hidden email] >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[hidden email] >> >> This list hosted by: http://www.qsl.net Please help support this >> email list: http://www.qsl.net/donate.html Message delivered to >> [hidden email] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net Please help support this email > list: http://www.qsl.net/donate.html Message delivered to > [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
In reply to this post by JHRichards
James,
a widely used design is to wire the sources together via some resistors, and get some gain by a following OP-amp. The resistors could be made as pots to adjust volume. I built one for my guitar amp, if you look into DIY guitar electronics you'll find plenty of design ideas. here is mine: https://www.log49.com/index.php?/archives/18-For-my-guitar-Pre-Amp,-Effect-and-Mixer.html Note that you may have to add some extra capacitors to block RF, not all readily available mixer boxes pay attention to that, really. 73 Gernot DF5RF Am 10.01.2019 um 00:03 schrieb Richards: > Good Day. > > Background: > > I am assisting a blind ham who also suffers some hearing loss. I > suggested using headphones to attenuate ambient environmental noise as > he operates. The rub is, he needs to hear both his receiver AND his > computer (which provides audible feedback when logging contacts and > performing other duties.) > > Question: > > Can anyone suggest a simple passive (or active) mixer circuit schema I > can build for him to safely mix audio signals from his transceiver > headphone jack with audio signals from his computer sound card > headphone jack? > > Discussion: > > While there are multiple commercially produced simple and complex > mixing products in the marketplace, I would prefer to build an > inexpensive, small footprint solution we can easily incorporate in his > station to minimize clutter and the number of cables, jacks, and > controls -- he contends with plenty of that already. I suppose one > solution might be a simple Y-adapter cable, but that seems too easy > and I wonder whether we should isolate the signals and/or grounds in > some way? (e.g., I do not wish to cause any "Pin-1" grounding issues, > and etc.) > > Any traction? Can anyone point me to an appropriate circuit > schematic or other resource? I don 't mind doing homework, and while > I enjoy building stuff and I am familiar with the basic concepts > involved, I could use a leg up on this project, especially to keep it > simple and easy to build and implement. Please reply off list if this > question is too far off topic, although I suspect there are many hams > who might be interested in the result, besides similarly situated > disabled operators. > > Thank you - James - K8JHR - > --------------------------------------- > > > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
Quick and dirty solution is to use PC out to one channel of stereo headphones
and radio out to the other channel. Then if needed amplify via small low cost stereo amp. -- Sent from: http://elecraft.365791.n2.nabble.com/ ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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